Greens demand an examination procedure from the President of Parliament. The background is a report from the political portal "Politico" Ferber is said to have advised companies in the financial sector on an EU financial market directive in 2015.

Ferber denied all allegations through his lawyer at Politico: The MP did not pursue any economic interests when he had contact with Michael Heijmeijer and the Cfinancials company. The possible involvement of Ferber and the financial industry has already been investigated, but no wrongdoing was found.